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Diffstat (limited to 'cpp/src/qpid/broker/SessionAdapter.cpp')
| -rw-r--r-- | cpp/src/qpid/broker/SessionAdapter.cpp | 382 |
1 files changed, 382 insertions, 0 deletions
diff --git a/cpp/src/qpid/broker/SessionAdapter.cpp b/cpp/src/qpid/broker/SessionAdapter.cpp new file mode 100644 index 0000000000..15c29ed482 --- /dev/null +++ b/cpp/src/qpid/broker/SessionAdapter.cpp @@ -0,0 +1,382 @@ +/* + * + * Copyright (c) 2006 The Apache Software Foundation + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +#include "SessionAdapter.h" +#include "Connection.h" +#include "DeliveryToken.h" +#include "MessageDelivery.h" +#include "qpid/Exception.h" +#include "qpid/framing/reply_exceptions.h" +#include <boost/format.hpp> +#include <boost/cast.hpp> +#include <boost/bind.hpp> + +namespace qpid { +namespace broker { + +using namespace qpid; +using namespace qpid::framing; + +typedef std::vector<Queue::shared_ptr> QueueVector; + +SessionAdapter::SessionAdapter(SemanticState& s) : + HandlerImpl(s), + exchangeImpl(s), + queueImpl(s), + messageImpl(s) +{} + + +void SessionAdapter::ExchangeHandlerImpl::declare(const string& exchange, const string& type, + const string& alternateExchange, + bool passive, bool durable, bool /*autoDelete*/, const FieldTable& args){ + + //TODO: implement autoDelete + Exchange::shared_ptr alternate; + if (!alternateExchange.empty()) { + alternate = getBroker().getExchanges().get(alternateExchange); + } + if(passive){ + Exchange::shared_ptr actual(getBroker().getExchanges().get(exchange)); + checkType(actual, type); + checkAlternate(actual, alternate); + }else{ + try{ + std::pair<Exchange::shared_ptr, bool> response = getBroker().getExchanges().declare(exchange, type, durable, args); + if (response.second) { + if (durable) { + getBroker().getStore().create(*response.first); + } + if (alternate) { + response.first->setAlternate(alternate); + alternate->incAlternateUsers(); + } + } else { + checkType(response.first, type); + checkAlternate(response.first, alternate); + } + }catch(UnknownExchangeTypeException& e){ + throw CommandInvalidException(QPID_MSG("Exchange type not implemented: " << type)); + } + } +} + +void SessionAdapter::ExchangeHandlerImpl::checkType(Exchange::shared_ptr exchange, const std::string& type) +{ + if (!type.empty() && exchange->getType() != type) { + throw NotAllowedException(QPID_MSG("Exchange declared to be of type " << exchange->getType() << ", requested " << type)); + } +} + +void SessionAdapter::ExchangeHandlerImpl::checkAlternate(Exchange::shared_ptr exchange, Exchange::shared_ptr alternate) +{ + if (alternate && alternate != exchange->getAlternate()) + throw NotAllowedException( + QPID_MSG("Exchange declared with alternate-exchange " + << exchange->getAlternate()->getName() << ", requested " + << alternate->getName())); +} + +void SessionAdapter::ExchangeHandlerImpl::delete_(const string& name, bool /*ifUnused*/){ + //TODO: implement unused + Exchange::shared_ptr exchange(getBroker().getExchanges().get(name)); + if (exchange->inUseAsAlternate()) throw NotAllowedException(QPID_MSG("Exchange in use as alternate-exchange.")); + if (exchange->isDurable()) getBroker().getStore().destroy(*exchange); + if (exchange->getAlternate()) exchange->getAlternate()->decAlternateUsers(); + getBroker().getExchanges().destroy(name); +} + +Exchange010QueryResult SessionAdapter::ExchangeHandlerImpl::query(const string& name) +{ + try { + Exchange::shared_ptr exchange(getBroker().getExchanges().get(name)); + return Exchange010QueryResult(exchange->getType(), exchange->isDurable(), false, exchange->getArgs()); + } catch (const ChannelException& e) { + return Exchange010QueryResult("", false, true, FieldTable()); + } +} +void SessionAdapter::ExchangeHandlerImpl::bind(const string& queueName, + const string& exchangeName, const string& routingKey, + const FieldTable& arguments){ + + Queue::shared_ptr queue = state.getQueue(queueName); + Exchange::shared_ptr exchange = getBroker().getExchanges().get(exchangeName); + if(exchange){ + string exchangeRoutingKey = routingKey.empty() && queueName.empty() ? queue->getName() : routingKey; + if (exchange->bind(queue, exchangeRoutingKey, &arguments)) { + queue->bound(exchangeName, routingKey, arguments); + if (exchange->isDurable() && queue->isDurable()) { + getBroker().getStore().bind(*exchange, *queue, routingKey, arguments); + } + } + }else{ + throw NotFoundException( + "Bind failed. No such exchange: " + exchangeName); + } +} + +void +SessionAdapter::ExchangeHandlerImpl::unbind(const string& queueName, + const string& exchangeName, + const string& routingKey) +{ + Queue::shared_ptr queue = state.getQueue(queueName); + if (!queue.get()) throw NotFoundException("Unbind failed. No such exchange: " + exchangeName); + + Exchange::shared_ptr exchange = getBroker().getExchanges().get(exchangeName); + if (!exchange.get()) throw NotFoundException("Unbind failed. No such exchange: " + exchangeName); + + //TODO: revise unbind to rely solely on binding key (not args) + if (exchange->unbind(queue, routingKey, 0) && exchange->isDurable() && queue->isDurable()) { + getBroker().getStore().unbind(*exchange, *queue, routingKey, FieldTable()); + } + +} + +Exchange010BoundResult SessionAdapter::ExchangeHandlerImpl::bound(const std::string& exchangeName, + const std::string& queueName, + const std::string& key, + const framing::FieldTable& args) +{ + Exchange::shared_ptr exchange; + try { + exchange = getBroker().getExchanges().get(exchangeName); + } catch (const ChannelException&) {} + + Queue::shared_ptr queue; + if (!queueName.empty()) { + queue = getBroker().getQueues().find(queueName); + } + + if (!exchange) { + return Exchange010BoundResult(true, false, false, false, false); + } else if (!queueName.empty() && !queue) { + return Exchange010BoundResult(false, true, false, false, false); + } else if (exchange->isBound(queue, key.empty() ? 0 : &key, args.count() > 0 ? &args : &args)) { + return Exchange010BoundResult(false, false, false, false, false); + } else { + //need to test each specified option individually + bool queueMatched = queueName.empty() || exchange->isBound(queue, 0, 0); + bool keyMatched = key.empty() || exchange->isBound(Queue::shared_ptr(), &key, 0); + bool argsMatched = args.count() == 0 || exchange->isBound(Queue::shared_ptr(), 0, &args); + + return Exchange010BoundResult(false, false, !queueMatched, !keyMatched, !argsMatched); + } +} + +Queue010QueryResult SessionAdapter::QueueHandlerImpl::query(const string& name) +{ + Queue::shared_ptr queue = state.getQueue(name); + Exchange::shared_ptr alternateExchange = queue->getAlternateExchange(); + + return Queue010QueryResult(queue->getName(), + alternateExchange ? alternateExchange->getName() : "", + queue->isDurable(), + queue->hasExclusiveOwner(), + queue->isAutoDelete(), + queue->getSettings(), + queue->getMessageCount(), + queue->getConsumerCount()); +} + +void SessionAdapter::QueueHandlerImpl::declare(const string& name, const string& alternateExchange, + bool passive, bool durable, bool exclusive, + bool autoDelete, const qpid::framing::FieldTable& arguments){ + + Exchange::shared_ptr alternate; + if (!alternateExchange.empty()) { + alternate = getBroker().getExchanges().get(alternateExchange); + } + Queue::shared_ptr queue; + if (passive && !name.empty()) { + queue = state.getQueue(name); + //TODO: check alternate-exchange is as expected + } else { + std::pair<Queue::shared_ptr, bool> queue_created = + getBroker().getQueues().declare( + name, durable, + autoDelete, + exclusive ? &getConnection() : 0); + queue = queue_created.first; + assert(queue); + if (queue_created.second) { // This is a new queue + if (alternate) { + queue->setAlternateExchange(alternate); + alternate->incAlternateUsers(); + } + + //apply settings & create persistent record if required + queue_created.first->create(arguments); + + //add default binding: + getBroker().getExchanges().getDefault()->bind(queue, name, 0); + queue->bound(getBroker().getExchanges().getDefault()->getName(), name, arguments); + + //handle automatic cleanup: + if (exclusive) { + getConnection().exclusiveQueues.push_back(queue); + } + } else { + if (exclusive && queue->setExclusiveOwner(&getConnection())) { + getConnection().exclusiveQueues.push_back(queue); + } + } + } + if (exclusive && !queue->isExclusiveOwner(&getConnection())) + throw ResourceLockedException( + QPID_MSG("Cannot grant exclusive access to queue " + << queue->getName())); +} + + +void SessionAdapter::QueueHandlerImpl::purge(const string& queue){ + state.getQueue(queue)->purge(); +} + +void SessionAdapter::QueueHandlerImpl::delete_(const string& queue, bool ifUnused, bool ifEmpty){ + ChannelException error(0, ""); + Queue::shared_ptr q = state.getQueue(queue); + if(ifEmpty && q->getMessageCount() > 0){ + throw PreconditionFailedException("Queue not empty."); + }else if(ifUnused && q->getConsumerCount() > 0){ + throw PreconditionFailedException("Queue in use."); + }else{ + //remove the queue from the list of exclusive queues if necessary + if(q->isExclusiveOwner(&getConnection())){ + QueueVector::iterator i = find(getConnection().exclusiveQueues.begin(), getConnection().exclusiveQueues.end(), q); + if(i < getConnection().exclusiveQueues.end()) getConnection().exclusiveQueues.erase(i); + } + q->destroy(); + getBroker().getQueues().destroy(queue); + q->unbind(getBroker().getExchanges(), q); + } +} + + +SessionAdapter::MessageHandlerImpl::MessageHandlerImpl(SemanticState& s) : + HandlerImpl(s), + releaseOp(boost::bind(&SemanticState::release, &state, _1, _2)), + rejectOp(boost::bind(&SemanticState::reject, &state, _1, _2)), + acceptOp(boost::bind(&SemanticState::accepted, &state, _1, _2)) + {} + +// +// Message class method handlers +// + +void SessionAdapter::MessageHandlerImpl::transfer(const string& /*destination*/, + uint8_t /*acceptMode*/, + uint8_t /*acquireMode*/) +{ + //not yet used (content containing assemblies treated differently at present +} + + void SessionAdapter::MessageHandlerImpl::release(const SequenceSet& transfers, bool /*setRedelivered*/) +{ + transfers.for_each(releaseOp); +} + +void +SessionAdapter::MessageHandlerImpl::subscribe(const string& queueName, + const string& destination, + uint8_t acceptMode, + uint8_t acquireMode, + bool exclusive, + const string& /*resumeId*/,//TODO implement resume behaviour + uint64_t /*resumeTtl*/, + const FieldTable& arguments) +{ + Queue::shared_ptr queue = state.getQueue(queueName); + if(!destination.empty() && state.exists(destination)) + throw NotAllowedException(QPID_MSG("Consumer tags must be unique")); + + string tag = destination; + state.consume(MessageDelivery::getMessageDeliveryToken(destination, acceptMode, acquireMode), + tag, queue, false, //TODO get rid of no-local + acceptMode == 1, acquireMode == 0, exclusive, &arguments); +} + +void +SessionAdapter::MessageHandlerImpl::cancel(const string& destination ) +{ + state.cancel(destination); +} + +void +SessionAdapter::MessageHandlerImpl::reject(const SequenceSet& transfers, uint16_t /*code*/, const string& /*text*/ ) +{ + transfers.for_each(rejectOp); +} + +void SessionAdapter::MessageHandlerImpl::flow(const std::string& destination, u_int8_t unit, u_int32_t value) +{ + if (unit == 0) { + //message + state.addMessageCredit(destination, value); + } else if (unit == 1) { + //bytes + state.addByteCredit(destination, value); + } else { + //unknown + throw SyntaxErrorException(QPID_MSG("Invalid value for unit " << unit)); + } + +} + +void SessionAdapter::MessageHandlerImpl::setFlowMode(const std::string& destination, u_int8_t mode) +{ + if (mode == 0) { + //credit + state.setCreditMode(destination); + } else if (mode == 1) { + //window + state.setWindowMode(destination); + } else{ + throw SyntaxErrorException(QPID_MSG("Invalid value for mode " << mode)); + } +} + +void SessionAdapter::MessageHandlerImpl::flush(const std::string& destination) +{ + state.flush(destination); +} + +void SessionAdapter::MessageHandlerImpl::stop(const std::string& destination) +{ + state.stop(destination); +} + +void SessionAdapter::MessageHandlerImpl::accept(const framing::SequenceSet& commands) +{ + + commands.for_each(acceptOp); +} + +/* +void SessionAdapter::MessageHandlerImpl::acquire(const SequenceSet& transfers) +{ + SequenceNumberSet results; + RangedOperation op = boost::bind(&SemanticState::acquire, &state, _1, _2, boost::ref(results)); + transfers.processRanges(op); + results = results.condense(); + getProxy().getMessage().acquired(results); +} +*/ + +}} // namespace qpid::broker + + |